TY - JOUR
T1 - Dual-layer light emitting devices based on polymeric Langmuir- Blodgett films
AU - Jung, GY
AU - Pearson, C
AU - Kilitziraki, M
AU - Horsburgh, LE
AU - Monkman, AP
AU - Samuel, Ifor David William
AU - Petty, MC
PY - 2000
Y1 - 2000
N2 - Poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) and poly(6-hexylpyridine-2,5-diyl) (PHPY) Langmuir-Blodgett films have been used as emitting layer and electron transporting layer, respectively, in light emitting diodes. The electrical and opto-electrical characteristics of the dual-layer devices have been compared to single layer devices based on MEH-PPV. AC impedance measurements over the frequency range 5 Hz-13 MHz have been used to provide an insight into the electrical equivalent circuit of the devices. The external quantum efficiency of the dual-layer structure was found to be approximately ten times higher than that of the single layer device.
AB - Poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) and poly(6-hexylpyridine-2,5-diyl) (PHPY) Langmuir-Blodgett films have been used as emitting layer and electron transporting layer, respectively, in light emitting diodes. The electrical and opto-electrical characteristics of the dual-layer devices have been compared to single layer devices based on MEH-PPV. AC impedance measurements over the frequency range 5 Hz-13 MHz have been used to provide an insight into the electrical equivalent circuit of the devices. The external quantum efficiency of the dual-layer structure was found to be approximately ten times higher than that of the single layer device.
KW - ORGANIC ELECTROLUMINESCENT DIODES
KW - ELECTRON-TRANSPORTING POLYMER
KW - IMPEDANCE SPECTROSCOPY
UR - http://www.scopus.com/inward/record.url?scp=0034088682&partnerID=8YFLogxK
M3 - Article
SN - 0959-9428
VL - 10
SP - 163
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
ER -